**Please do not use Excel for the explanation, need to see a clear breakdown by hand or a financial calculator. Please show step by step, so I can learn better. I have put in the answers I have so far.

Spherical Manufacturing recently spent $17 million to purchase some equipment used in the manufacture of disk drives. This equipment has a CCA rate of 30% and Spherical's marginal corporate tax rate is 29%.

a. What are the annual CCA deductions associated with this equipment for the first five years?

The CCA deduction for year 1 is $2,550,000

The CCA deduction for year 2 is $4,335,000

The CCA deduction for year 3 is $3,034,500

The CCA deduction for year 4 is $2,124,150

The CCA deduction for year 5 is $1,486,905

b. What are the annual CCA tax shields for the first five years? The CCA tax shield for year 1 is $739,500

The CCA tax shield for year 2 is $1,257,150

The CCA tax shield for year 3 is $880,005

The CCA tax shield for year 4 is $616,004

The CCA tax shield for year 5 is $431,202

**Please help me with these questions, please show step by step. No excel please

c. What is the present value of the first five CCA tax shields if the appropriate discount rate is 10% per year?

d. What is the present value of all the CCA tax shields assuming the equipment is never sold and the appropriate discount rate is 10% per year?

e. How might your answer to part (d) change if Spherical anticipates that its marginal corporate tax rate will increase substantially over the next five years?